In Editor, Blueprint resources are not freed up when the Blueprint is closed

UE - Framework - Blueprint - Feb 16, 2024

It appears that the preview scene used to render thumbnails is not destroyed after a thumbnail is rendered, even after the blueprint editor is closed and GC is run. Also found in Release-5.4, CL: 31 ...

Replicating a non-root component with simulate physics enabled causes the component to be in the wrong place on spawn, on clients.

UE - Simulation - Physics - Jan 20, 2025

When a BP spawns another, if the spawned Actor has a non-root child component that is simulating physics, on clients, immediately after spawn, the child component will have the world position double ...

Ensure condition failed in FGPUSkinCache::InternalSetVertexStreamFromCache

UE - Graphics Features - Apr 12, 2017

This ensure has occurred with some frequency in the 4.14 and 4.15 releases, and has been reported in the linked UDN post. Though this Jira links to one specific CrashGroup in CrashReporter, there a ...

Instanced EditInlineNew Objects not correctly propagating to children and placed level instances

UE - Gameplay - Mar 3, 2020

Instanced EditInlineNew objects are kind of broken right now and hard to make full use of. In addition to the notes above, there are some cases where you can't even assign new values into the base c ...

Enum Meta is being ignored when project is packaged

Tools - Nov 4, 2014

When using UMeta on Enums, text is ignored when doing Enum to String on a packaged project. ...

Blueprint Node "Get Actors" for Layers in Level Blueprint causes crash in Packaged .exe

UE - Virtual Production - Nov 21, 2019

Blueprint Node "Get Actors" for Layers in Level Blueprint causes crash in Packaged .exe The Blueprint node "Get Actors" for Layers in the Level Blueprint causes an instant crash in a built developm ...

ICVFX Editor window blinking and render nodes hitching at the end of every Take Record

UE - Virtual Production - Tools - Multi-user - Feb 10, 2024

After a take record within multi-user has completed recording, and with Toggle Multi User Take Recorder Sync enabled, any other control boxes with the ICVFX window open to UV view will flash with th ...

Character sliding down a surface can prematurely land before reaching a walkable floor

UE - Gameplay - Player Movement - Apr 3, 2024

Under some circumstances, a character falling and sliding along a sloped surface may get hung up near the bottom of the surface before actually landing on the floor.  This seems to occur when slidin ...

Decals custom depth/stencil side effect from Lumen

UE - Graphics Features - Oct 15, 2024

The order of passes related to Decal rendering (without the DBuffer) and CustomDepth is changed by the CVar "r.Lumen.AsyncCompute", even when Lumen is not enabled. This causes Decal Materials that ...

A crash in editor will result after swapping inherited SCS component names at the parent class level before loading a child class that overrides them.

UE - Gameplay - Blueprint - Oct 26, 2018

This is an editor-only crash that's due to stack overflow/infinite recursion in UInheritableComponentHandler::FixComponentTemplateName(). We are recursively trying to rename other inherited componen ...